import axios from 'axios'

class HttpRequest{
	constructor(baseUrl = baseURL){
		this.baseUrl = baseUrl;
		this.queue={};
	}

	getInsideConfig () {
	    const config = {
	      baseURL: this.baseUrl,
	      headers: {
	        'Content-Type': 'application/json',
	      }
	    }
    return config
  }

  destroy (url) {
    delete this.queue[url]
    if (!Object.keys(this.queue).length) {
      // Spin.hide()
    }
  }

  interceptors (instance, url) {
    // 请求拦截
    instance.interceptors.request.use(config => {
      // 添加全局的loading...
      if (!Object.keys(this.queue).length) {
        // Spin.show() // 不建议开启，因为界面不友好
      }
      this.queue[url] = true
      return config
    }, error => {
      return Promise.reject(error)
    })
    // 响应拦截
    instance.interceptors.response.use(res => {
      this.destroy(url)
      const { data, status } = res
      return { data, status }
    }, error => {
      this.destroy(url)
      let errorInfo = error.response
      if (!errorInfo) {
        const { request: { statusText, status }, config } = JSON.parse(JSON.stringify(error))
        errorInfo = {
          statusText,
          status,
          request: { responseURL: config.url }
        }
      }
      return Promise.reject(error)
    })
  }
  request (options) {
    const instance = axios.create()
    options = Object.assign(this.getInsideConfig(), options)
    this.interceptors(instance, options.url)
    return instance(options)
  }
}
export default HttpRequest